Tubular ozone-generator.



M. P. TTO.

TUBULAR OZONE GENERATOR.

APPLICATION FILED SEPT. I8. I9Ia.

Patented Dec. 14, 1915.

5 SHEETS-SHEET l.

M. P. OTTO.

TusuLAH ozoNE GENERATOR.Y

APPLICATION FILED SEPT. I8 19|3. 1,163,768. Patented Dec. 14, 1915.

5 SHEETS-SHEET 2- Jia/Mmm y fm M. P. GTTO.

TUBULAR OZONE GENERATOR.

APPLICATION FILED SEPT. I3. |913.

Patented DOO. 14, 1915.

5 SHEETS-SHEET 3.

Patemed be. 14,1915.

5 SHEETS-SHEET 4- M. P. 0110. TUBULAR OZONE GENERATOR. APPUCATION FILED-SEPT. l8 1913.

fig Z L IVI. P. OTTO.

TUBULAR )ZONE GENERATOR.

APPLICATION FILED SEPT. I8. 1913.

Patented Deo. 14, 1915.

5 SHEETS-SHEET 5 MA311-Ts PAUL omo, oF PARIS, FRANCE.

TUBU LAR OZONE-GENERATOR.

` Specification of Letters Patent.

Application led September 18, 1913. Serial No. 790,381.

To all whom t may concern:

Be it known that L'MARIUS PAUL OTTO, a citizen of the Republic of France, residing at Paris, France,-have invented certain new and useful Improvements in Tubular Ozone-Generators, of which the following is a specification.

In constructing ozone generators wherein the electrical discharge takes place between two dielectrics, a difficulty is found in cooling the said dielectrics. If the said dielectrics are cooled by means of a current of water, one at least of the circuits must be suitably insulated because it is at high tension. If the electrical discharge takes place between a dielectric and a metal electrode, the latter will always be more or less deeply attacked either by the actual discharges or by the oxidizing substances generated by the discharge.

The present invention has now for its object to provide an improved ozone generator, the novelty of which consists substantially in that one of the two electrodes only is cooled by direct contact with a casing in which a current Vof cooled water circulates, whilethe'other electrode located at a slight distance from the first electrode is cooled by radiation only.

The improved apparatus thus combines from the oint' of View of ywater circulation the a vantages of an apparatus having a single cooling circulation, and from the point of view of inoxidizability, the advantages of an apparatus having a double di electric.

Apparatus of this kind may be constructed either with fiat dielectrics or with dielectrics formed of concentric tubes.

In the latter case the electric discharge takes place in the annular space comprised between two tubes and the air :1i .'culates along the generating lines thereof passing either from one end of the tube to the other end, or from both ends of the tube to the middle thereof.

This last construction has considerable advantages namely it does away with the end joints which are so difcult to make, and it realizes with a tubular system, the con struction already applied by the present inventor to ozonizers having at electrodes with central suction. 0

A n embodiment of this invention is lllustrated by way of example in the accompanying drawings, in which Figure l is a sectional plan of approximately one half of the improved tubular ozonizer. Fig. la is a similar view of the other half thereof. Fig. 2 is a View half in external elevation and half in sectional elevation of approximately one half of the device. Fig. 2a is a similar view of the other half thereof. Fig. 3 is a view in half external elevation and half in section taken in a plane at right angles to Fig. 2, the dielecratented Dee. 14., 1915.

tric tubes being omitted from Fig. 3. Fig.

4 is a section on the line C D of Fig. l. Fig. 5 illustrates the means employed for centering glass tubes. Figs.- G and 7 are views of details. i

As shown, the improved tubular ozonizer is composed substantially of a series of elements similar to the element which is shown in section in Figs. l and la. Each element is formed of two tubes of glass or any other dielectric A and B, arranged concentrically and separated from each other by an interval C of a few millimeters. These tubes are centered by a rod d carrying at each of its ends 2 conical supports E1 E2, F1 F2.

The conicity has for its object to insure automatically the centering of the tubes.

The tube A is pierced in its middle por-y tion with a series of holes G1 Gr2 G3v (Fig. 2). These holes open into the suction chamber H. The tube B is lined with a sheet of'tin and aluminium. The tube A engages with slight friction in a metal sleeve L of cylindrical shape formed in the body of the apparatus. The current of cooling water circulates around this sleeve. Contact is insured between the tube A and the sleeve L by means of corrugated tin foil or sheets of tnsel suitably arranged.

The air or oxygen to be ozonized enters the apparatus through the side chambers I1 and I2, and passes through the annular space comprised between the tubes A and B wherein it is subjected to the action of electrical discharge. It reaches finally the'suction chamber H. The walls of this latter chamber are covered with inoxidizable materials K.

The drawings illustrate a tubular ozonizer with two elements but is is to be understood that the ozonizers may be constructed with any desired number of elements. l

The electric current is supplied to the apparatus by means of a. metal rod M, Fig. 2, which is carefully insulated by means of a porcelain sleeve N. A metal part O establishes connection between the elements. The outer tubes are earthed and the inner tubes are at a high potential.

In a case where the circulation of the air takes place longitudinally along the generating lines of the tubes, the central suction chamber H is dispensed with and the air or oxygen to be ozonized passes directly from the chamber I1 into the chamber I2. In such a case the centering cones El E2 are made solid and form plugs for stopping' up two ends of the electrode B.

It is to be understood that the construction hereinbefore described with two dielectric's and a middle suction chamber without end joints is equally applicable to a tubular ozonizer composed of a dielectric and a metal tube, but in this case. the advantage of inoxidizabilitj7 would be less.

In the types of apparatus hereinbefore described, since the current of cooling Water is not in direct contact with the dielectric tubes, there is no risk of the water penetrating into. the apparatus if a tube should happen to break for any reason.

Having now described my invention what I claim as new and desire to secure byy Letters Patent is l l. In ozone apparatus, the combination of a casing having a cooling chamber and an air-suction chamber therein, electrodes supported in said casing, and a pair of telescoping dielectric tubes embraced by said cooling chamber, the outer tube of said pair having perforations opening into said airsuction chamber.

Q. In ozone apparatus, thev combination of a casing having an intermediate air-suction chamber and oppositely disposed cooling chambers,velectrdes supported in said casing, and apair of telescoping dielectric tubes extending axially through said casing and embraced by said cooling chamber, the outertube of said pair having perforations opening into said air-suction chamber.

3. In ozone apparatus, the combination of a casing having an intermediate air-suction chamber and oppositely disposed cooling chambers, electrodes supported in said casing, a pair of telescopingspaced dielectrictubes extending axially through said casing and embraced by said cooling chambers, the outer tube of said pair having perforations opening into said air-suction chamber, and means for centering said tubes within the casing and maintaining the spacing between said tubes.

In testimony whereof I have afiixed my signature in presence of two Witnesses.

MARIUS PAUL OT'IO.

Witnesses v Louis GARDET, HENRI NONIN. 

